Add #applicable_states instance method to Machine class.
Add #applicable_states instance method to Machine class.

mkcode/statesmin,mmontalvo/statesman,pacso/statesman,timothyp/statesman,mmontalvo/statesman,gocardless/statesman,image-tester/statesman,eljojo/statesman,eljojo/statesman,gocardless/statesman,div/statesman,timothyp/statesman,div/statesman,pacso/statesman,image-tester/statesman